论文标题

进一步完善模拟F(G)重力中的Swampland DS猜想

Further Refining Swampland dS Conjecture in Mimetic f(G) Gravity

论文作者

Gashti, S. Noori, Sadeghi, J., Alipour, M. R.

论文摘要

在各种类型的一般相对性扩展中,已经研究了模拟重力分析,例如模拟F(R)重力,Mimetic F(R,T)重力,模仿F(R,G)重力等。本文介绍了一组由模仿条件产生的方程式,并研究了宇宙膨胀,并结合了模仿F(g)重力和Swampland ds DS猜测。我们分析和评估这些结果。因此,我们首先彻底引入了模拟F(g)重力,并计算一些宇宙学参数,例如标量光谱指数,张量与尺度比率和慢速参数。另外,我们根据模拟F(g)重力研究了潜力。然后,我们将在这种情况下挑战Swampland DS猜想。 By expressing the coefficient of swampland dS conjectures viz $C_{1}$ and $C_2$ in terms of $n_{s}$ and $r$, we plot some figures and determine the allowable range for each of these cosmological parameters and these coefficients, and finally, compare these results with observable data such as Planck and BICEP2/Keck array data.我们显示$ c_ {1} $和$ C_2 $不是$ \ Mathcal {o}(1)$,因此对于此通货膨胀模型,不满足精炼的Swampland DS猜想。然后,我们通过进一步的精炼Swampland DS猜想对其进行检查,该猜想具有一系列免费参数,例如$ a,b> 0 $,$ q> 2 $和$ a+a+b = 1 $。通过调整这些参数,可以讨论上述猜想与通货膨胀模型的兼容性。我们确定满足进一步的精炼型DS猜想。 when $a < \frac{1}{1.00489}=0.99513$, we can always find $a$, $b$ and $q$ whose value is larger than 2, viz for $q=2.4$, we find $0.99185\leq a < 1$, which we can choose $a=0.99235$ according to the condition $a < 0.99513$.我们也知道$ b = 1-a $,因此我们将拥有$ 1-0.99235 = 0.00765> 0 $。

Mimetic gravity analysis has been studied as a theory in various types of general relativity extensions, such as mimetic f(R) gravity, mimetic f(R, T) gravity, mimetic f(R, G) gravity, etc., in the literature. This paper presents a set of equations arising from mimetic conditions and studies cosmic inflation with a combination of mimetic f(G) gravity and swampland dS conjectures. We analyze and evaluate these results. Therefore, we first thoroughly introduce the mimetic f(G) gravity and calculate some cosmological parameters such as the scalar spectral index, the tensor-to-scalar ratio, and the slow-roll parameters. Also, we investigate the potential according to the mimetic f(G) gravity. Then we will challenge the swampland dS conjectures with this condition. By expressing the coefficient of swampland dS conjectures viz $C_{1}$ and $C_2$ in terms of $n_{s}$ and $r$, we plot some figures and determine the allowable range for each of these cosmological parameters and these coefficients, and finally, compare these results with observable data such as Planck and BICEP2/Keck array data. We show $C_{1}$ and $C_2$ are not $\mathcal{O}(1)$, so the refining swampland dS conjecture is not satisfied for this inflationary model. Then we examine it with further refining swampland dS conjecture, which has a series of free parameters such as $a,b>0$, $q>2$, and $a+b=1$. By adjusting these parameters, the compatibility of the mentioned conjecture with the inflationary model can be discussed. We determine the further refining swampland dS conjecture is satisfied. when $a < \frac{1}{1.00489}=0.99513$, we can always find $a$, $b$ and $q$ whose value is larger than 2, viz for $q=2.4$, we find $0.99185\leq a < 1$, which we can choose $a=0.99235$ according to the condition $a < 0.99513$. Also we know $b=1-a$, so we will have $1-0.99235=0.00765 > 0$.

扫码加入交流群

加入微信交流群

微信交流群二维码

扫码加入学术交流群,获取更多资源